// const arr = [1,2,3,4,5,6]
// console.log(arr.copyWithin(2,3))

// console.log(arr.copyWithin(2,1,4))


// const str = "2233245"
// const newStr = [...new Set(str)].join(""); 
// console.log(newStr)


const strMap = new Map([
	['2', 2]
])
console.log(strMap.get('2'))

const strMap1 = new Map()
let keys = {
	id: 1
}
strMap1.set(keys, 123)
console.log(strMap1.get(keys))